Shoulder bag



FIG. 1 is a top and front-side and left-side perspective view of a shoulder bag showing my new design;

FIG. 2 is a back-side view thereof;

FIG. 3 is a front-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM The ornamental design for a shoulder bag, as shown and described. 